baber/WOPTO huggingface dataset:
Patent GB-1484101-A (GB)
Title: Method for the preparation of rubbers with low molecular weights through degradation of macro-molecular polyenes and the products thus obtained
IPC: C08F8/00
Filed: 1975-01-21
Abstract: 1484101 Degradation of rubber ANVAR AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 21 Jan 1975 [30 Jan 1974] 2567/75 Headings C3E and C3P An unsaturated elastomer is reacted in an organic solvent medium in the absence of air, or in an aqueous medium, with an oxidizing agent and a reducing agent, the former being selected from hydrogen peroxide and organic peroxides and the latter from sulphinic acid and its derivatives and hydrazine and its derivatives. Examples are given in which (a) natural rubber, synthetic polyisoprene, polybutadiene, polychloroprene in solution in toluene, or a natural rubber latex, is reacted with toluene-p-sulphinic acid and hydrogen peroxide; (b) natural rubber in toluene is reacted with 2,4-dichlorobenzoyl peroxide and toluene-p-sulphinic acid; (c) natural rubber latex is reacted as in (a) in the presence of the copper salt of ethylenediamine tetraacetic acid; (d) natural rubber latex is reacted with hydrogen peroxide and monophenyl hydrazine; (e) natural rubber depolymerized as in (a) is reacted with triisocyanato triphenylmethane; (f) depolymerized natural rubber is vulcanized with dicumyl peroxide or sulphur and a sulphenamide accelerator and (g) depolymerized natural rubber is cross-linked and grafted with trimethylolpropane triacrylate and (i) dicumyl peroxide or (ii) cumene hydroperoxide, sulphur and an accelerator.
Patent GB-450690-A (GB)
Title: A new or improved process for the deoxidation of zinc
IPC: C22B19/32
Filed: 1935-01-26
Abstract: Traces of oxygen-containing compounds are removed from technically pure zinc by intimately mixing the zinc at a temperature lying within the congealing range with a material having a higher fusing point than the zinc and a considerable affinity for oxygen.  The material may be a metal, e.g. copper, magnesium, or aluminium, a mixture of a metal and a metal oxide, e.g. copper and cuprous oxide, a metal compound such as a chloride or sulphide, or an ammonium compound, e.g. ammonium chloride.  To ensure intimate contact relative motion may be produced between the zinc and gratings, grilles, plates, &c. of the de-oxidizing material.  The congealing range for technically pure zinc lies between 419 DEG  C. and an upper temperature which may vary between 428 DEG  C. and 441 DEG  C.  If the metal used for deoxidizing alloys with the zinc it may be subsequently removed, e.g. by liquation.  The treatment is stated to reduce considerably the tendency of the zinc to oxidize and to alloy with other metals or metalloids.  The fluidity is also increased.
Patent GB-664919-A (GB)
Title: Improvements in or relating to telescoping and/or luffing ladders
IPC: E06C5/16
Filed: 1949-02-01
Abstract: 664,919. Operating clutches. BURG, G. VAN DER, and GEESINK, M. M., (trading as COMMANDITAIRE VENNOOTSCHAP FABRIEK VOOR AUTOEN MACHINEBOUW, REINIGINGSEN BRANDWEERMATERIEEL VOOHEIM J. GEESINK & ZONEN), and SCHIERECK, W. Feb. 1, 1949, No. 2690/49. Class 80 (ii). [Also in Group XXX] The luffing and/or telescoping movements of a turntable ladder are actuated through gearing under the control of a hydraulic follow up system which immobilises the gearing after the ladder has moved to a position corresponding with the pre-set position of a manually adjusted control valve. The ladder 16 is luffed about its pivot 17 by a screw and nut mechanism 31, 32 which is rotated through bevel gearing 30 by a shaft 29, the rotation of which shaft being controlled by the engagement of one clutch element 26 or 26a with the corresponding element 22 or 22a secured to one spur wheel 21 or 21a which are each continuously rotated by a driven shaft 70. The clutch elements 26, 26a constitute non- rotatable pistons in cylinders 27, 27a and are adapted to overcome springs 40, 40a and engage elements 22, 22a on receipt of pressure fluid in cylinders 27, 27a through conduits 10, 10a. On rotating a control handle 12 to a desired position, e.g, to the left to effect upward luffing movement of the ladder an inlet port 8 on a rotatable valve element 2 is put into communication with conduit 10 through a port 13 in a rotatable sleeve 3, and an outlet port 9 is connected, through a port 14 in said sleeve, with conduit 10a; the clutch elements 22, 26 are thus engaged and luffing commences. This luffing movement of the ladder is communicated through a rack 38, a pinion 37 shafts 34, 36, a pinion 71 and a rack 33 with the sleeve valve element 3 which moves the ports 13, 14 relative to the element until said ports are once again closed whereupon the luffing ceases. When applied to the actuation of telescoping movement of the ladder, the apparatus controls rotation of a winch drum (not shown) which effects extension of the ladder and also rotates the sleeve 3 to effect a follow-up control as before.
Patent GB-196403-A (GB)
Title: Improvements in and connected with hot plates for heating and cooking purposes
IPC: F24C15/10
Filed: 1922-01-30
Abstract: 196,403. Buddle, L. J. Jan. 30, 1922. Cooking-stoves; baffles.- A hot-plate for use with gas or cil stoves or a gas ring or like burner embodies means for distributing or concentrating the heat from the burners under one or more sections of the hot-plate. The apparatus comprises a top-plate 10 with the usual pot-holes 14 and holes 16 for the escape of combustion products; depending walls 11 with air holes 15, and one or more deflector plates 17, 26, shown in Fig. 2, which represents the hot-plate inverted. The deflector plates which are pierced with air-holes 27, partition the space below the hot-plate into a number of chambers which may be individually or collectively heated. They may be pivoted along the edge and angularly adjustable by an external handle provided with locking means, being set vertically to separate the hot-plate into sections, inclined to direct the gases to a particular section, or flat against the lower side of the hot-plate when the whole area of the latter is to be used. Inclined baffles 13 are attached as shown to the walls 11. The hot-plate may be slidably held in guides 30 in a frame which engages the top of a gas stove by a second set of guides 29, enabling the hot plate to be adjusted over the burners in either direction. A stand is described for supporting the hot-plate over a gas ring &c. A similar hot-plate adapted for use with an oil-stove is also described, one portion being perforated with a number of holes over which an oven may be supported.
Patent GB-1142754-A (GB)
Title: Plastisol compositions containing vinyl chloride polymers
IPC: C08L27/06
Filed: 1967-01-18
Abstract: 1,142,754. Polyvinylchloride mixtures. W. R. GRACE & CO. 18 Jan., 1967 [10 March, 1966], No. 2734/67. Heading C3P. A plastisol composition comprises (1) a mixture of two vinyl chloride resins (a) a suspension homopolymer or copolymer containing at least 80% by wt. of vinyl chloride having an average number particle diameter (determined by summing the diameters of a number of particles and dividing by the number of particles) of 80-180 microns and an inherent viscosity of 0À5-1À2 and (b) an organosol grade emulsion homopolymer or copolymer containing at least 95% by wt. of vinyl chloride having an average number particle diameter below 0À25 micron and an inherent viscosity below 0À9 and forming at least 5% by wt. of the mixture and (2) a liquid non-volatile plasticizer. Specified comonomers are vinylidene chloride, vinyl acetate, acrylonitrile and dialkyl maleate. Plasticizers are dialkyl phthalates, alkyl phthalyl alkyl glycollates, dialkyl esters of alkane dicarboxylic acids, acetyl trialkyl citrates and trialkyl and triaryl phosphates. Other ingredients are whiting, talc, clay, barytes, asbestine, carbon black, iron oxide, titanium dioxide, zinc and calcium stearates, thio-organic tin compounds, cadmium and barium laurates, stearyl alcohol, polyamide wax, paraffin and microcrystalline wax, zinc resinate, polyethylene glycol fatty acid esters and blowing agents, e.g. azodicarbonamide, dinitrosopentamethylene-tetramine, and 3,3<SP>1 </SP>- disulphonylhydrazide diphenylsulphone. The products are used for sealing containers.
Patent GB-661412-A (GB)
Title: Improvements relating to the production of fluorescent electric discharge lamps
IPC: H01J9/22
Filed: 1949-02-01
Abstract: 661,412. Electrostatic precipitation. BRITISH THOMSON-HOUSTON CO., Ltd., BLOOD, W. R. and MOORE, J. W. Jan. 25, 1950 [Feb. 1, 1949], No. 2752/49. Drawings to Specification. Class 39 (i). In apparatus for depositing by electrostatic precipitation a layer of powdered fluorescent material on the wall of the container of a fluorescent lamp, the electrode located outside the wall has a plurality of uniformly distributed point-like extensions towards the wall. The point-like extensions may be constituted by pointed wires spaced from the wall, or by metal brushes which contact the wall. The electrode may comprise a semi-cylindrical or cylindrical sleeve which is simultaneously rotated and moved axially of the container, or the electrode may be in the form of a stirrup arranged with its limbs axially of the container and rotated about the container. The container itself may be rotated. Specifications 621,734 and 621,778, [Group VI], are referred to.
Patent GB-150230-A (GB)
Title: Improved method of and means for burning pulverulent or liquid fuel in furnaces
IPC: F23C99/00
Filed: 1919-02-24
Abstract: 150,230. Muhlfeld, J. E. Feb. 24, 1919. Pulverulent and liquid fuel furnaces.-A steamboiler or other furnace is provided with one or more preliminary combustion chambers located outside of a main combustion chamber and into which one or more streams of pulverulent or liquid fuel and air are delivered to effect their mixture, gasification and ignition before passing to the main combustion chamber. Fig. 1 shows a locomotive fire-box with the invention applied thereto. Fuel is supplied to the preliminary combustion chamber 153 through one or more conduits 154 by a fan or blower or by induced draught and the necessary air to complete the combustion of the fuel is admitted at the front of the chamber. The walls of the chamber 153 are covered with non-conducting material 157 and sheet metal plates 158. The preliminary combustion chamber may be arranged so that its outlet is on a level with the inclined floor 150 of the main combustion chamber A, or opposite the firing-opening 162. The outlet of the preliminary combustion chamber may be contracted, and the fuel supply conduits may be arranged to deliver separate streams of fuel converging at the outlet, as shown in Fig. 4. A modification is shown in Fig. 5 in which two superposed preliminary combustion chambers 153, 163 communicate with the main combustion chamber A and with one another through one or more vertical conduits such as 164. As shown in Figs. 1 and 5, " slag receptacles 159 are provided through which air for combustion may be admitted to the main combustion chamber. Specification 112,155 is referred to.
Patent GB-814464-A (GB)
Title: Frequency converter
IPC: H03B19/14
Filed: 1956-01-30
Abstract: 814,464. Rectifying, changing frequency. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., and MARTIN, R. G. March 26, 1957 [Jan. 30, 1956], No. 2881/56. Class 38 (2). An arrangement whereby A.C. may be converted to D.C. or to A.C. of a different frequency comprises two reversible transistors V1, V3 each having one emitter/collector electrode connected to an outer terminal of a supply transformer winding and the other emitter/collector electrode connected to a centre tap through a common load. The base electrode of each transistor is positively biased through a resistor R1 or R4 and is connected with an auxiliary transistor V2, V4 whose baseemitter circuits each include a secondary winding of a transformer T2. When the transformer T2 is supplied from a signal source S negative base current flows in the transistors V2, V4 alternately each half-cycle, and when this occurs their emitter-collector circuits are rendered conductive so that a battery B2 supplies negative current to the base of transistor V1 or V3 which overcomes the positive bias and renders the emitter-collector circuit of these transistors conductive. Hence current flows in the load circuit through the transistors V1, V3 alternately. With the signal S having the same frequency and phase as the supply the arrangement operates as a full-wave rectifier producing D.C. of one polarity. By reversing the phase of the signal the opposite polarity is obtained. Thus by periodically reversing the signal phase at a frequency f A.C. of frequency f is obtained. Arrangements are described whereby (a) the reversal of phase of the signal is effected (Fig. 4, not shown), (b) the D.C. bias battery B1 is replaced by a transformer (Fig. 5, not shown), (c) the battery B2 is replaced by a full-wave rectifier circuit including a current transformer (Fig. 6, not shown).
Patent GB-192700-A (GB)
Title: Arrangement for converting a motorcycle into a three-wheeled motor-car
IPC: B62K13/04
Filed: 1923-01-31
Abstract: 192,700. Dal Vero, C. Jan. 31. 1922. [Convention date]. Tri-cars and the like; articulated road vehicles.. -A motor-bicycle is converted to a three-wheel motor vehicle by removing the rear wheel and attaching a two-wheeled structure in the form of a cage carrying the body and enclosing the bicycle frame. The additional frame comprises a bar 1, V shaped at the rear and V shaped at the front, where it is bent upwardly and connected by a bar 3 to a fork 4. An arched member 5 is connected to the rear of the fork 4 and to the front end of a bar 6 running to the rear of the frame 1. The bar 6 is connected intermediately of its length to an arch member 9 from which depend vertical members adapted to be connected to the bicycle rear forks. The bicycle frame is connected to a cross member 15 on the additional frame and to inclined rods 14, the other ends of which are connected to the frame 1 at the points where the cross-member 15 and arch 5 are also connected. The motor bicycle may drive the additional wheels 8 through a change-speed gear 19 and chain.
Patent GB-757307-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J61/067
Filed: 1952-02-04
Abstract: 757,307. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 4, 1952 [Feb. 15, 1951], No. 2917/52. Class 39 (1). [Also in Group XXXV] A discharge lamp which may be fluorescent, and circuit arrangement has two lamps 40, 401, Fig. 1, supplied from a lag circuit 45, and a lead circuit 46, 47, respectively, of a high reactance transformer 42, and windings 49, for supplying heating current to the lamp electrodes 34, 34<SP>1</SP>, inductively coupled to the lag circuit, the electrical and physical characteristics of the electrodes, the impedances of the circuits and the heating voltages supplied to the electrodes being correlated to produce a heating energy supply to each electrode of a value of less than 20 per cent of the rated lamp consumption per foot, and the connection of each electrode to its heating circuit being permanent. In one example, each lamp has a length of 48 inches, a nominal rating of 40 watts, and an energy consumption for heating the electrodes at starting of approximately 1<SP>1</SP>/ 3  watts per electrode. A conducting means 48 extends along one or both lamps to facilitate starting and can comprise a metal fixture, grounded or connected to a potential source, spaced from the envelope by about # of an inch. Alternatively, silver or graphite stripes, earthed or connected to the ends of the lamps, can be deposited on the envelopes, or internal or external conductive coatings covering the whole of the envelopes can be used. Hydrophobic coatings 41, 41<SP>1</SP> are provided on the lamp envelopes and can be of the silicone type produced by exposing the lamps for a few minutes to the vapour of methylchlorosilane in an enclosure maintained at 50 per cent relative humidity as described in Specification 593,681, [Group XL]. The lamp filling is argon at 3 mms. pressure and mercury at a pressure of between 12 and 20 microns. The electrodes 34 comprise three major turns of the coated overwound coil construction shown in Fig. 2a, which is made as described in Specification 569,685, [Group XL], and straight portions the ends of which are secured by welding or clamping to the lead supports 32, 321, Fig. 2.
Patent GB-354272-A (GB)
Title: Smoking pipe mouthpiece
IPC: A24F7/00
Filed: 1930-01-28
Abstract: 354,272. Tobacco pipes. P•RUSSE, A., 97, Lavigueur Street, Quebec, Canada. Jan. 28, 1930, No. 2981. Convention date, June 12, 1929. Void [Published under Sect. 91 of the Acts]. [Class 130.] A separate mouthpiece of bakelite hard rubber, &c., which prevents saliva from entering the stem of a pipe comprises a tubular section 13 terminating in a head 14. A conduit 16 is bored through the head at right-angles to the bore of the member 13 forming a chamber 15 which deviates saliva downwardly. The member 13 is slotted throughout its length at 17 and for a short distance at 18 to enable it to be engaged by friction in the stem 10.
Patent GB-219926-A (GB)
Title: Process of manufacturing cellulose esters
IPC: C08B7/00
Filed: 1924-02-06
Abstract: Cellulose esters containing both higher fatty acid radicals and nitric acid or other organic acid radicals are prepared by treating esters containing one or more of the last-mentioned groups with the acid chlorides of the higher fatty acids in the presence of pyridine and a diluent such as benzene.  To separate the ester, the reaction mass is precipitated with alcohol, and the ester so separated may be purified by solution in benzene and re-precipitation with alcohol. In an example, di-nitrocellulose dissolved in pyridine is treated with lauryl chloride dissolved in toluene, and the mixture heated to 40-45 DEG  C.  Specification 201,510 is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes the manufacture of carbohydrate esters by a process similar to that for the cellulose esters; and Specification 208,685, [Class 2 (iii), Dyes &c.], is referred to.  This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 (3) (a) includes the manufacture of carbohydrate esters containing both higher fatty acid radicals and nitric acid or other organic acid radicals, by treating esters containing one or more of the last-mentioned groups with the acid chlorides of the higher fatty acids in the presence of pyridine and a diluent such as benzene. Specification 201,510 is referred to.  This subject-matter does not appear in the Specification as accepted.
Patent GB-973006-A (GB)
Title: Analog-to-digital converter
IPC: H03M1/00
Filed: 1962-01-26
Abstract: 973, 006. Analogue-to-digital converters. RADIO CORPORATION OF AMERICA. Jan. 26, 1962 [Feb. 21,1961], No. 3120/62. Heading G4H. [Also in Division H3] The analogue input supplied to winding 14 of a magnetic core 10 produces a magnetomotive force in the direction shown by arrow 15. Bias windings W8, W4, W2, W1 are energized in sequence and produce binary-weighted magnetomotive forces in opposition to that produced by winding 14. The bias windings either have different numbers of turns or are supplied with binary weighted currents. Assuming an analogue input of ten units, timing circuit 22 energizes T8 to set bi-stable circuit FF 8  and produce an opposing bias force of eight units by means of winding W8. A read-out pulse is then applied to winding 42 and produces a force in the same direction as arrow 15 so that the direction of magnetisation of core 10 remains the same and no output is obtained from sensing coil 30, this signifying a "1". Since no pulse is applied over line 37 to AND gates 28, FF 8  remains set. The next line energized by 22 is T 4 , FF 4  is set and a bias force of twelve units is produced, so that core 10 is magnetised in the other direction and the following read-out operation produces a pulse in line 37 to signify a "0". FF 4  is thus reset before 22 energizes line T 2 . The operation continues in like manner until finally FF 8  and FF 2  remain set and FF 4  and FF 1  are reset. A serial output is obtained at 34 and a parallel output from leads 20. The system is reset by a pulse applied to line 39 and OR gates 29.
Patent GB-1394304-A (GB)
Title: Composition for treating steels
IPC: C21C7/076
Filed: 1973-01-22
Abstract: 1394304 Flux for treating molten steel AIKOH CO Ltd 22 Jan 1973 [25 Jan 1972] 3184/73 Headings C7D and C7M A flux for addition to molten steel during tapping or teeming comprises in wt per cent 15-50 NaF, 3-40 LiF, 30-70 CaF 2  and has a melting point of 600-1100 C. Up to 3 % K 2 TiF 6  and/or 3% CeF3 can also be included and a fluoride of a rare earth or misch metal may replace the CeF 3  The flux is used for cleaning carbon steel, stainless steel, Cr-Mo steel by deoxidation, removal of non metallic inclusions, improving ingot surfaces, desulphurization and removal of hydrogen. In bottom pouring 150-1000 g flux per metric ton of steel is used, and in top pouring 300-1000 g per metric ton. The flux formed by mixing-40 mesh powders is added as powder, granules or briquettes. The flux can also be used in continuous casting.
Patent GB-193034-A (GB)
Title: Apparatus for the separation of solid materials by centrifugal means
Filed: 1923-02-02
Abstract: 193,034. Radelet, r., (Assignee of Pinoche, G.). Feb. 8, 1922. [Convention date]. Density separators.-An apparatus for separating solids, more particularly ores and coal, has a central spindle l and one or more sheaths each having a helico-truncated part ab, which merges into a truncated part cd. Internal partitions or ribs e, f, g, are arranged between the inner and outer walls of the part ab, thus forming narrow channels for the stream of liquid carrying the solids. The part cd also has partitions e<1>, f<1>, g<1> which are continuations of the partitions e, f, g. Either they do not extend completely across the sheath, or they have a number of apertures for the passage of the solids. The discharge end of the part cd is closed by a plate h with nozzle i which may be provided with valves to vary the rate of flow. While the apparatus is rotated, the materials to be separated are introduced through the tube k to the part ab and they remain shielded by the rib g from the diluting water fed through the tube j until they enter the part cd. Here the materials are separated by means of the communication existing between the channels bounded by the ribs e<1>, f<1>, g<1>. The graded materials issue from the nozzles i, and are collected in channels m in a circular casing n.
Patent GB-787655-A (GB)
Title: Method of installing pins, bolts, rivets and the like in metal parts by means of explosively actuated tools
IPC: B25C1/18
Filed: 1955-02-04
Abstract: 787,655. Perforating. SCHULZ, W. Feb. 4, 1955 [Feb. 4, 1954], No. 3308/55. Class 83 (4). In order to minimize deformation of a metal part when a pin such as a rivet or stud is fired into it by explosive force, a supporting plate of a softer metal is placed on the part and the pin is fired through the plate into the metal part. The supporting plate may be of split construction as shown in Figs. 2 and 3 to facilitate subsequent removal and may have one or more holes of smaller diameter than the pin. The plate may be aluminium or aluminium alloy.